FELENDO A2513202931 Rear Air Suspension Strut | OEM Replacement for Mercedes-Benz R-Class W251

Precision Engineering. Restored Ride Quality.

Is your Mercedes-Benz R-Class sitting unevenly, sagging at the rear, or –displaying an air suspension warning light? The culprit is often a failed rear air suspension strut. The FELENDO A2513202931 Rear Air Suspension Strut is a premium, direct OEM-grade replacement engineered to restore your vehicle’s legendary comfort and handling.

As a trusted name in automotive air suspension systems, FELENDO delivers components that meet or exceed original equipment specifications. This rear air strut is manufactured to the same rigorous standards as the original factory-installed unit, ensuring a perfect fit and seamless integration with your vehicle’s existing air suspension system.

The air suspension strut is the heart of your R-Class’s rear suspension, combining the damping function of a shock absorber with the load-leveling capability of an air spring. It works in coordination with sensors, valves, and the compressor to maintain proper ride height, adjust suspension stiffness, and ensure the perfect balance of comfort and handling that Mercedes-Benz is known for. The system adapts in real time to road conditions, driving dynamics, and load variations.

Choose FELENDO for reliability, performance, and peace of mind – the smart, cost-effective solution to keep your Mercedes-Benz R-Class performing at its best.

Key Features

• OEM-Grade Quality: Manufactured to meet or exceed original equipment specifications, engineered for reliable performance and durability.

• Direct Fit Replacement: Designed to match the fit and function of the original air strut – connects directly to existing air lines and electrical connectors.

• Restores Full Function: Fixes common issues including rear vehicle sagging, uneven ride height, rough rides, and suspension warning lights.

• Integrated Air Spring: Combines shock absorber and air spring in one complete unit for seamless integration.

• Durable Construction: Built with high-quality materials, including a corrosion-resistant finish, to ensure long service life.

• Complete Assembly: Includes all necessary components for a plug-and-play installation – no complex modifications required.

• 12-Month Warranty: Backed by FELENDO’s comprehensive warranty for your peace of mind.

Fitment (适用车型)

• Mercedes-Benz R-Class (W251) – 2006-2015

  • R 300 CDI (2008-2010)

  • R 320 CDI / R 320 CDI 4MATIC (2006-2013)

  • R 350 / R 350 4MATIC (2006-2015)

  • R 350 CDI 4MATIC (2008-2015)

  • R 500 4MATIC (2006-2013)

  • R 63 AMG 4MATIC (2006-2011)

  • R 280 CDI (2006-2009)

• Position: Rear – Left or Right Side

Note: Compatible with vehicles equipped with AIRMATIC air suspension. Please confirm compatibility with your specific vehicle using your VIN before purchasing.

OE Cross-Reference (OE对照号)

• A2513202931 (Primary – this listing)

• 251 320 29 31

• A 251 320 29 31

• A2513202231 (Alternative)

• A2513202831 (Alternative)

Symptoms of a Failing Air Suspension Strut

• Rear vehicle sagging – the rear of the vehicle sits lower than normal due to air loss

• Uneven ride height – the vehicle sits unevenly from side to side

• Rough or bouncy ride – the rear suspension feels harsh, bouncy, or unstable

• Hissing noise – audible air leak from the strut area

• AIRMATIC warning light – the dashboard –displays a suspension system warning

• Compressor overworking – the compressor runs constantly trying to maintain pressure

Installation Tips

• Always replace air suspension struts in pairs (both rear sides) to ensure balanced handling and performance.

• Before installation, inspect all air lines and fittings for cracks, kinks, or other damage.

• Ensure the air suspension system is properly depressurized before removing the old strut.

• After installation, the air suspension system should be professionally recalibrated using diagnostic equipment.

• Torque all nuts and bolts to manufacturer specifications during installation.

Important: Air suspension systems operate under high pressure. Professional installation is highly recommended to ensure proper fitment, safety, and system performance. Before replacing the strut, verify there are no leaks in the air lines or elsewhere in the system.

Why Source FELENDO Chassis Components?

1. Premium Seal Integrity: Fitted with specialized multi-lip piston seals and low-friction polished chrome rods to perform under intense thermal friction and prevent slow pressure bleeding.

2. Strict Quality Mapping: Built to meet exact factory tolerances, eliminating noise, vibration, and harshness (NVH) transfer into the passenger compartment.

3. B2B Global Supply Support: Direct wholesale access through UNI-TIL.COM bypasses multi-tier local distributor markups, securing maximum margins for independent regional wholesalers and specialty repair garages.